private void ProcessAnimationRecursive(NodeContent input, AnimationClips animationClips)
{
foreach(KeyValuePair<string, AnimationContent> animation in input.Animations)
{
// do we have this animation before?
AnimationClips.Clip clip;
if (!animationClips.Clips.TryGetValue(animation.Key, out clip))
{
//never before seen clip
System.Diagnostics.Trace.WriteLine("New clip: " + animation.Key);
clip = new AnimationClips.Clip();
clip.Name = animation.Key;
clip.Duration = animation.Value.Duration.TotalSeconds;
clip.Keyframes = new List<AnimationClips.Keyframe>[bones.Count];
for (int b = 0; b < bones.Count; b++)
clip.Keyframes[b] = new List<AnimationClips.Keyframe>();
animationClips.Clips[animation.Key] = clip;
}
//for each canell, determine the bone and then process all of the keyframes for that bone
foreach (KeyValuePair<string, AnimationChannel> channel in animation.Value.Channels)
{
// what is the bone index?
int boneIndex;
if (!bones.TryGetValue(channel.Key, out boneIndex))
continue; //ignore if not a named bone
foreach (AnimationKeyframe keyframe in channel.Value)
{
Matrix transform = keyframe.Transform; //keyframe transformation
AnimationClips.Keyframe newKeyFrame = new AnimationClips.Keyframe();
newKeyFrame.Time = keyframe.Time.TotalSeconds;
transform.Right = Vector3.Normalize(transform.Right);
transform.Up = Vector3.Normalize(transform.Up);
transform.Backward = Vector3.Normalize(transform.Backward);
newKeyFrame.Rotation = Quaternion.CreateFromRotationMatrix(transform);
newKeyFrame.Translastion = transform.Translation;
clip.Keyframes[boneIndex].Add(newKeyFrame);
}
}
}
//System.Diagnostics.Trace.WriteLine(input.Name);
foreach (NodeContent child in input.Children)
{
ProcessAnimationRecursive(child, animationClips);
}
}
protected override AnimationClips Read(ContentReader input, AnimationClips existingInstance)
{
AnimationClips clips = new AnimationClips();
// Determine how many clips there are.
int clipCnt = input.ReadInt32();
for (int c = 0; c < clipCnt; c++)
{
// Create a clip and load it up
AnimationClips.Clip clip = new AnimationClips.Clip();
clip.Name = input.ReadString();
clip.Duration = input.ReadDouble();
// Determine how many bones there are.
int boneCnt = input.ReadInt32();
clip.Keyframes = new List <AnimationClips.Keyframe> [boneCnt];
for (int i = 0; i < boneCnt; i++)
{
// Determine how many keyframes there are.
int cnt = input.ReadInt32();
List <AnimationClips.Keyframe> boneKeyframes = new List <AnimationClips.Keyframe>(cnt);
clip.Keyframes[i] = boneKeyframes;
for (int j = 0; j < cnt; j++)
{
AnimationClips.Keyframe keyframe = new AnimationClips.Keyframe();
keyframe.Time = input.ReadDouble();
keyframe.Rotation = input.ReadQuaternion();
keyframe.Translastion = input.ReadVector3();
boneKeyframes.Add(keyframe);
}
}
clips.Clips[clip.Name] = clip;
}
return(clips);
}
private AnimationClips ProcessAnimations(ModelContent model,
NodeContent input, ContentProcessorContext context)
{
// First build a lookup table so we can determine the
// index into the list of bones from a bone name.
for (int i = 0; i < model.Bones.Count; i++)
{
bones[model.Bones[i].Name] = i;
}
AnimationClips animationClips = new AnimationClips();
ProcessAnimationsRecursive(input, animationClips);
// Ensure all animations have a first key frame for every bone
foreach (AnimationClips.Clip clip in animationClips.Clips.Values)
{
for (int b = 0; b < bones.Count; b++)
{
List<AnimationClips.Keyframe> keyframes = clip.Keyframes[b];
if (keyframes.Count == 0 || keyframes[0].Time > 0)
{
AnimationClips.Keyframe keyframe = new AnimationClips.Keyframe();
keyframe.Time = 0;
Matrix transform = model.Bones[b].Transform;
transform.Right = Vector3.Normalize(transform.Right);
transform.Up = Vector3.Normalize(transform.Up);
transform.Backward = Vector3.Normalize(transform.Backward);
keyframe.Rotation = Quaternion.CreateFromRotationMatrix(transform);
keyframe.Translation = transform.Translation;
keyframes.Insert(0, keyframe);
}
}
}
return animationClips;
}
/// <summary>
/// Recursive function that processes the entire scene graph, collecting up
/// all of the animation data.
/// </summary>
/// <param name="input">The input scene graph node</param>
/// <param name="animationClips">The animation clips object we put animation in</param>
private void ProcessAnimationsRecursive(NodeContent input, AnimationClips animationClips)
{
foreach (KeyValuePair<string, AnimationContent> animation in input.Animations)
{
// Do we have this animation before?
AnimationClips.Clip clip;
if (!animationClips.Clips.TryGetValue(animation.Key, out clip))
{
// Never before seen clip
// System.Diagnostics.Trace.WriteLine("New clip: " + animation.Key);
clip = new AnimationClips.Clip();
clip.Name = animation.Key;
clip.Duration = animation.Value.Duration.TotalSeconds;
clip.Keyframes = new List<AnimationClips.Keyframe>[bones.Count];
for (int b = 0; b < bones.Count; b++)
clip.Keyframes[b] = new List<AnimationClips.Keyframe>();
animationClips.Clips[animation.Key] = clip;
}
else if (animation.Value.Duration.TotalSeconds > clip.Duration)
{
clip.Duration = animation.Value.Duration.TotalSeconds;
}
//
// For each channel, determine the bone and then process all of the
// keyframes for that bone.
//
foreach (KeyValuePair<string, AnimationChannel> channel in animation.Value.Channels)
{
// What is the bone index?
int boneIndex;
// Get rid of unnamed bones
if (!bones.TryGetValue(channel.Key, out boneIndex))
{
continue; // Ignore if not a named bone
}
// Get rid of useless animations
if (!skinned && IsUselessAnimation(boneIndex))
{
// System.Diagnostics.Debug.WriteLine("Removed " + boneIndex.ToString());
continue; // Ignore if useless
}
foreach (AnimationKeyframe keyframe in channel.Value)
{
Matrix transform = keyframe.Transform; // Keyframe transformation
AnimationClips.Keyframe newKeyframe = new AnimationClips.Keyframe();
newKeyframe.Time = keyframe.Time.TotalSeconds;
transform.Right = Vector3.Normalize(transform.Right);
transform.Up = Vector3.Normalize(transform.Up);
transform.Backward = Vector3.Normalize(transform.Backward);
newKeyframe.Rotation = Quaternion.CreateFromRotationMatrix(transform);
newKeyframe.Translation = transform.Translation;
clip.Keyframes[boneIndex].Add(newKeyframe);
}
// Linear keyframe reduction (remove from clip.Keyframes)
System.Diagnostics.Debug.WriteLine(clip.Keyframes[boneIndex].Count);
LinkedList<AnimationClips.Keyframe> keyframes = new LinkedList<AnimationClips.Keyframe>();
foreach (AnimationClips.Keyframe keyframe in clip.Keyframes[boneIndex])
{
keyframes.AddLast(keyframe);
}
LinearKeyframeReduction(keyframes);
clip.Keyframes[boneIndex] = keyframes.ToList<AnimationClips.Keyframe>();
System.Diagnostics.Debug.WriteLine(clip.Keyframes[boneIndex].Count);
}
}
// System.Diagnostics.Trace.WriteLine(input.Name);
foreach (NodeContent child in input.Children)
{
ProcessAnimationsRecursive(child, animationClips);
}
}